
The Conversational AI UI Library For Any LLM
NLUX
(for Natural Language User Experience) is an open-source React and JavaScript library that makes it super
simple
to
integrate powerful large language models (LLMs) like ChatGPT into your web app or website. With just a few lines
of code, you can add conversational AI capabilities and interact with your favourite LLM.
Key Features 🌟
- Build AI Chat Interfaces In Minutes ― High quality conversational AI interfaces with just a few lines of code.
- React Components & Hooks ―
<AiChat />
for UI and useChatAdapter
hook for easy integration. - LLM Adapters ― For
ChatGPT
/ LangChain
🦜 LangServe / HuggingFace
🤗 Inference. - A flexible interface to Create Your Own Adapter for any LLM or API.
- Assistant and User Personas ― Customize the assistant and user personas with names, images, and more.
- Streaming LLM Output ― Stream the chat response to the UI as it's being generated.
- Customizable Theme - Easily customize the look and feel of the chat interface using CSS variables.
- Event Listeners - Listen to messages, errors, and other events to customize the UI and behaviour.
- Zero Dependencies ― Lightweight codebase, with zero-dep except for LLM front-end libraries.

Docs & Examples 📖
Get Started With NLUX React
🚀
The example below demonstrates how to create an AI chat interface using NLUX React
and LangChain
, the open source
framework for building LLM backends. But you can use NLUX
with any LLM ― either
via the standard adapters provided, or
by creating your own adapter.
To get started with NLUX React
and LangChain, install the @nlux/react
and @nlux/langchain-react
packages:
npm install @nlux/react @nlux/langchain-react
Then include <AiChat />
in your React app to get started.
Use the useChatAdapter
hook to configure an adapter for your LLM.
import {AiChat} from '@nlux/react';
import {useChatAdapter} from '@nlux/langchain-react';
const App = () => {
const gptAdapter = useChatAdapter({
url: 'https://<Your LangServe Runnable URL>'
});
return (
<AiChat
adapter={gptAdapter}
composerOptions={{
placeholder: 'How can I help you today?'
}}
conversationOptions={{
historyPayloadSize: 'max'
}}
/>
);
}
You should also include the NLUX theme CSS file in your HTML page
or import it in your React app.
And The Result Is ✨
An AI chatbot, powered by LangChain, that can understand and respond to user messages:

Theme File and CSS 🎨
You should include a theme CSS file into your HTML page.
The recommended way for React developers is to install @nlux/themes
npm install @nlux/themes
Then import the theme CSS file into your app or component as follows:
import '@nlux/themes/nova.css';
This requires that your bundler is configured to load CSS files.